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Evaluating the Geometric Accuracy of Pushbroom Satellite Images
Mohammad Najaf Targhi
teacher
Islamic Azad University, Branch of Estahban,
Email: alighorbanali@yahoo.com
Jamshid Noori
teacher
Islamic Azad University, Branch of Estahban
Email: jam_1350@yahoo.com
For geometric correction of pushbroom satellite images, mathematical models are required, which can model the dynamic geometry of image.
For high resolution satellite images, because the various reasons (for example: security problems), information about satellite location and satellite position (satellite ephemeris) is not available. Therefore, using of independent mathematical models from satellite ephemeris is essential (for instance: Rational Functions Model).
In this paper, geometric accuracy of three sensor’s images has been tested by several mathematical models for extracting the 2D and 3D geometric information. The results indicate:
• From the geometric point of view, SPOT images are suitable for generating the 1:50000 topographic maps and smaller scales.
• From the geometric point of view, MOMS images are suitable for generating the 1:50000 planimetric maps and smaller scales.
• From the geometric point of view, IKONOS images are suitable for generating the 1:5000 ortho-image and smaller scales.
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